Finding the Fourth Proportional to 13,166.43, 18,168.30 and 7,860.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,166.43 : 18,168.30 = 7,860.52 : x
2. Step 2: Convert to fraction form
   13,166.43/18,168.30 = 7,860.52/x
3. Step 3: Cross multiply
   13,166.43x = 18,168.30 × 7,860.52
4. Step 4: Simplify right side
   13,166.43x = 142,812,285.52
5. Step 5: Solve for x
   x = 142,812,285.52/13,166.43
6. Step 6: Final answer
   x = 10,846.70